This work aims to describe and to analyze the grammatical class of the adjectives in the Brazilian Portuguese and its respective changes of semantic loads, when they function as adnominal adjunct and appear before the subject. It was verified that the Brazilian normative grammars of Portuguese, as well as didactic books aiming the teaching of Portuguese for foreigners, in general, do not make reference to the semantic changes that occur within this grammatical class when it is placed before the subject. The theoretical basis of this dissertation focus, firstly, in the description of the grammatical class of the adjective in the theoretical and grammatical compendiums destined to the teaching of Portuguese for both Brazilians and foreigners. In a second part, the emphasis is given to the studies developed in Pragmatics, using the concepts of language and discourse, mainly through the light that is shed by the Philosophy of Language, and the Linguistic Anthropology that sees culture as a system of practices. Finally, the research deals with the analysis of the adjectives found in written texts samples, taken from advertisements or journalistic pieces, that demonstrate cultural aspects of the daily life in Brazil. The main contribution of this work is to provide to the PL2-E teaching professionals a deeper reflection about the teaching/learning process of the Portuguese grammar as a second language for foreigners.